Insulator-bracket.



P. M. BENEDICT. msuLAmR BRACKET.

. APPLICATION FILED MAR. 8.1916- 1,286,207. Patented Dec. 3, 1918.

UNITED STATES PATENT OFFICE.

PAUL M. BENEDICT, qF-NEw HAvEN, CONNECTICUT, ASSIGNOR TO THE BARNES &

KOBEiRT MANUFACTURING COMPANY, OF MIIJLIJALE, CONNECTICUT, A CORPO-RATION OF CONNECTICUT.

INSULATOR-BRACKET.

To all whom it may concern:

Be it known that 1, PAUL M. BENEDICT,

"a citizen of the United States, residing in the city and county of NewHaven and Stateof Connecticut, have invented certain new and usefulImprovements in Insulator-Brackets, of which the following is a full,clear, and exact description.

This invention relates ets or supports such as used in connection withinsulators for telegraph, telephone and other electric wires, and itrelates more particularly to a device in which an insulator of glass orthe like, usually of the petticoat type, is secured to and supported ona pin or so-called cob of non-conducting material. In the preferredform, an insulator body of glass has a threaded socket by which it canbe screwed on to a wooden cob projecting upward from a suitable bracketor other support, but my improvements are also applicable to other typesof insulators.

One of the primary objects of the invention is. to provide means foreffectively securing the pin or cob on the bracket or other support.More particularly, it is aimed to furnish a construction in which thecob is interiorly reinforced. Very often the insulator is tunderconsiderable strain, which tends to snap 01f the cob at or near thelower part thereof, but my improved insulator support is so constructedthat the cob is strongly reinforced and supported at the lower part sothat it will not break 01f under any ordinary strain.

Another object of my invention is to provide means for preventing theloosening of the cob on the bracket. Devices of this character aresubjected to such hard usage that in many cases the cob works loose fromthe bracket as a result of strain or. vibration... This defect isavoided in the construction hereinafter described.

To these and other ends, the invention onsists in the novel features andcombinations of parts to be hereinafter described and claimed.

In the accompanying drawing,

Figure 1 is a side elevation of an insulator bracket embodying myimprovements;

Fig. 2 is a section of the insulator proper on line 2-2 of Fig. 1,showing the cob and its support in elevation;

Specification of Letters Patent;

to insulator brack- Patented Dec. 3, 1918.

Application filed March 8, 1916. Serial No. 82,889.

plan view ofthe cup de-.

L-shaped bracket arm 10 adapted to be screwed or otherwise secured to avertical surface by means of an attaching plate 11. The verticallyextending portion of the bracket arm 10 supports a Wooden cob 12supporting a glass insulator 13 of the petticoat type, said insulatorhaving an interiorly threaded socket by which it isscrewed on to the cob12. However, my improvements are not limited to this specific type ofinsulator.

In order to support the cob 12 firmly on .the bracket or othersupporting member, my

construction is preferably as follows: At the upper end of the bracket,a shoulder 14 is provided having a flat upper surface 15, as shown inFig. 6. The diameter of this shoulder will preferably approximate thatof the lower end of the cob. A shank 16 formed integral with the bracketxtends upward from the shoulder 14 and engages a socket 17 in the lowerend of the cob. The shank 16 is provided with screw threads which engagecorresponding screw threads on the wall of the socket 17, so that thecob may be tightlyscrewed on to the shank. In the particular form shown,the supporting shank 16 extends upwardly to about the middle of the cob,as the point of greatest strain is usually below the center of the cob,but in some cases a difierent construction may be employed. In order toprevent the cob from becoming loose on the shank 16, suitable lockingmeans is interposed between the cob and the bracket, and in theparticular form shown, I seat the lower end of the cob in a cup-likesheet metal member '18, which has an opening 19 whereby it may be placedover the shank 16, the lower surface of said cup-shaped member beingengaged by the shoulder 14, whpreby the cup is firmly supported frombeneath. Rotation of the .20 extending radially out from the lowersupporting shoulder or seat 14, the projections will engage the recesses21, so as to prevent the cup from turning on its axis. The lower endportion of the cob extends into the cup and is compressed therein sothat the cup is in turn tightly locked to the cob as well as to thebracket. In assembling the device, the cup may be readily placed overthe'threaded supporting shank 16, so as to rest on its supportingshoulder in engagement with the locking means associated with saidshoulder'around the periphery of the shank. The cob is next screwed onto the shank, and the lower end of the cob will then pass. down to thebottom of the cup. Thedevice is the n'placed in an appropriate machinefor swaging or compressing the cup in a lateral direction so that itsside wall is tightly pressed against the outer surface of th cob In theparticular form shown, the lower end of the cob is provided with aportion 22 of reduced diameter, which .is initially of I cylindricalform, there being a shoulder 23 at the upper boundary of said reducedportion. When the lower extremity of the cob reaches the .bottom of thecup, the upper edge of the cup will take up against the shoulder 23, andthe outer side surface of the side wall of the cup will be approximatelyflush with the outer surface of the lower part of the cob. The cobinitially 'makes a rather tight fit with the cup, but in order "to makea still tighter fit and prevent turning movement of the cob relativelyto the cup, the cup is swaged or compressed in the manner stated. In'this operation, most of the bending or swaging effect is produced nearthe upper edge of the cup, which is thereby caused to compress the cobto a certain degree and grip it firmly. It will therefore be seen thatthe cup-like member 18, in addition to preventing the pin or cob 12 fromrotating relative to the shank 16, serves also as means for surroundingand reinforcing the lower end of the cob 12 to prevent the same frombecoming split or broken. The cup-like member 18 thus serves thefunction of the well-known ferrule with which wooden handles and similardevices are commonly provided.

Owing to the fact that the cup is non-ro tatively engaged with thebracket on the one hand, and with the cob, on the other hand, the cob isabsolutely prevented from any turning movement, which would tend toloosen it from its interiorly threaded supporting'shank. v

While I have described in considerable detail the particular embodimentof my invention selected for illustration, I wish to have it understoodthat various modifications of the construction may be adopted withoutdeparting from the'scope ofmy'invention as defined in the claims.

What I claim is:

1. In an insulator support, the combinationof a supporting rod having alateral .shoulder, an integral upstanding projection tion of asupporting member, a threaded shank rigid with said supporting member, apin having threaded engagement with said shank, and means comprising aferrule for reinforcing the pin and for preventing relative turningmovement of the pin and said supporting member; substantially asdescribed.

3. In an insulator support, the combination of a supporting member, athreaded shank rigid with said'supporting member,

a cob having threaded engagement with said shank, and means forpreventing the cob from splitting and for preventing relative turningmovement of the cob and said supporting member, including a ferrulemember locked to the cob nd to said supporting member; substantially as.described.

4. In an insulator support, the combina-,

tion of a threaded shank, a cob having an interiorly threaded ,socketengaging said shank, and a cup fitting over the cob and non-rotativelyengaged with both the cob and the shank, whereby the cob is prevented.from splitting and from rotating relatively to said shank;substantially as described.

5. In an insulator support, the combination of a threaded shank, a cobhaving an interiorly threaded socket engaging said shank, a reinforcingcup fitting over and non-rotatively engaged with the lower part of thecob, and means for preventin rotation of said cup relatively to the shaubstantially as described.

6. In an insulator support, the combination of a bracket having ashoulder with a flat upper face, a threaded shank projecting upwardcentrally from said shoulder, said shank having radial projections atthe lower part thereof, a cup seated on the shoulder and having recessesengaged by said proections, and a member having a threaded socketengagmg said shank, the lower end of said member entering said cup andcompressed therein; substantially, as described.

8. In an insulator support, the' combina-' tion of a bracket having ashoulder, a cup- Supported on said shoulder, a cob supported in'said cupand compressed therein, whereby the end of the cob is reinforced toprevent splitting, a shank on the bracket extending upward from saidshoulder through said cup and on to which said cob is screwed,

' and means for preventing turning movement of the cup relatively to thebracket; substantially as described.

9. The combination of a member having a seat, a cup on said seat, a cobseated in said cup and reinforced thereby, and a shank integral withsaid member extending up wardly from said seat into a socket in the cobthrough an opening in the cup; substantially as. described.

10. In a device of the character described, the combination of a memberhaving a seat, a cup on said seat, a cob seated in said cup andreinforced thereby, and a shank extending from said seat into a socketin the cob and engaging the cob throughout at least a third of thelength of the cob; substantially as described.

11. In a device of the character described, the combination of a basemember, a shank member projecting upwardly therefrom, an insulatingmember screwed on said shank member, and means for reinforcing saidinsulating member and for preventing the unscrewing of the samecomprising a part frictionally compressedthereon, and having lockingengagement with the base member.

12. In an insulator support the combination of a bracket having ashoulder with a flatupper face, a threaded shank projecting upwardcentrally from said shoulder, said shank having radial projections atthe lower part thereof, a ferrule member seated on the shoulder andhaving recesses engaged by said projections, and a member having athreaded socket engaging said shank, the lower end of said member beingseated in said ferrule member and compressed therein, whereby the lowerend of said member is reinforced and prevented from turning relativelyto said support.

In witness whereof, I have hereunto set my hand on the 7th day of March,1916.

1 PAUL M. BENEDICT.

